2JZ28 Build - 4th Gen Camaro Z28 with built 2JZ/T56 Magnum

[wickedrx7]

Wonder what caused it to warp like that. Maybe stress relieved itself during powder coating?

[digitalsolo]

That’s my guess.   I had it bolted down when I welded it and I checked it (though only minimally) when I was done.    It could have been twisted and warped a little, but I’d have caught an 1/8”, for sure.    Weird.    Seems to be all good now though, so whatever I guess.

The throttle flange was fine, at least. 

[digitalsolo]

So, this car is back.

The original setup made 1350 to the tire.  The owner swapped to a different weight of oil vs. recommended by the builder and it spat out some bearings (big clearance motors and all that).   Engine was rebuilt, car was working well, but we're now having sporadic "weird" running behavior and ECU over temp alerts.

I went though it and put a new throttle body on it (has a GM DBW) and tested all the transducers.  No issues.   Harness -seems- fine, but right now our only thought is that something was damaged when it was torn apart for the engine rebuild.   Anyway, since the owner is a good friend of mine, I'm doing a full Tefzel/Raychem DR25 setup on it.   We're not going to pot and swap the connectors to Deutsch/Mil-Spec stuff or anything, or do booted transitions (just using SCL and epoxy), etc. so it's not a full on mil-spec harness, but it should be very nice.   It is all concentric twisted, which is such a PITA.   I'm also moving the Haltech out of the engine bay into the footwell.

Anywho, I ripped out the old harness and started on the new one yesterday.  I have the engine side assembled/twisted/sheathed, and built the engine bay chassis side layout.  Next is to integrate the engine bay chassis section into the rest of it.   Then I'll terminate the engine bay connections, and start the final integration at the ECU (shield drains, power/ground/5v splices, etc) and then finally terminate the ECU and retest it all.

[Exidous]

Should put a Barra in it!

[digitalsolo]

Forgive the sorrowful state of my garage.  I have a multiple half-disassembled cars and a whole bunch of parts stacked everywhere.

[Exidous]

What ECU will it be running? Assume you're using the shield as the sGND as well or are they VR?

[digitalsolo]

It's on a Haltech Elite 2500.

They're VR sensors for both.  Old school stuff. 

[bstallion]

This is awesome.. I need friends like you guys.

[digitalsolo]

Haha, thanks.  This car has been a huge amount of work.  My friend that owns it should have another video up soon.

I finished the harness yesterday and put the car back together.   So far, so good.   The issue with the ECU going over temperature seems to be solved.  I ran the car for 45 minutes yesterday and it stayed under 110* F which seems pretty normal to me.  It was up near 200* in 15-20 minutes before.   It also ran better than I've seen it run in quite some time.   I'm not really sure WHAT was damaged with the old harness;  the new one is an exact clone as far as design goes.   Just fresh, upgraded wires and some minor layout improvements (and a bit more shielding in a few areas).

All that's left to do now is put in a different tach that he wants to swap to, and put the main/pillar gauges back together, then he can come get it.

On the "my friends have cool cars" topic, I went to see a friend with a cammed LS3 in a super clean BRZ yesterday as well. Did a quick VATS delete/tune adjustment on it for first fire up.   He did a great job on that build so far as it literally fired right up (once I actually wrote the ECU properly) and ran great, which is not something I normally see on brand new builds!

[digitalsolo]

Finished this thing up and my friend picked it up Saturday morning.  Nice to have the garage back!

So far, so good on the "new harness fixed it all".   One more item off the list, at least.